Probability Review

What is the theoretical probability of the spinner landing on a 5?

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A coin is tossed 18 times. It lands on heads 12 times. What is the experimental probability of the coin landing on tails? reduce the fraction!

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McKayla flipped a coin 150 times. How many times could McKayla expect the coin to land on tails?

• 25

• 50

• 75

• 100

You spin the spinner. How many possible outcomes are there?

• 4
• 8
• 1
• 6

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11
• 5/6
• 1/3
• 5

In a cup are the numbers 1 - 20. Find the theoretical probability of 
picking an even number. 

• 10/20
• 1/2
• 1/20
• 20/20

An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling a 3.

• 1/6
• 3/6
• 1
• 1/2

An experiment consists of rolling a fair number cube. Find the theoretical probability of rolling an 8.

• 0
• 8/6
• 4/3
• 1/2

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.